Lexmark C5240KH High Yield Return Program Black Toner Cartridge for C524, C534 Black High Yield Return Program Toner Cartridge Compatible with Lexmark C524n,C524dn,C524dtn,C524dt,C524,C524tn,C534n,C534n,C534dn,C534dtn,C534dtn Approximate yield: 8000 pages